novalidate - This attribute ensures the form won't get validated when it is submitted. For example, if novalidate is set, the form element is an input type of number, and the user enters text, the form won't show an error.
method - The method specifies how the form data is sent. The method="get" adds the form data into the URL, is limited in number of characters, and is helpful for when a user may bookmark the result of the form submit (like a Google search). Get should never be used to send sensitive data since it will be visible in the URL. The method="post" sends data more securely and has no size limit.
action - The action attribute specifies where the form data gets sent and can be set as an absolute or relative URL.
The fieldset is used to group several controls and labels within a form. It can be styled using CSS. The legend element is used as a child of the fieldset and is styled as the title or caption of the fieldset group.
The label element provides a label for an element of an HTML form. The for attribute should match the id of the labelable element to meet accessibility standards and to help website visitors. The first element in the document with the same value for an ID as the value of the for attribute will be grouped with the label.
There are plenty of form elements and attributes available in HTML, and it is important to have a general understanding of most of them to give website users a positive experience.